In case there are stale session directories around, do a purge of the relevant session directory tree when an orted, HNP, or singleton start. This won't help in the case of direct-launched apps, but it's the best we can do.

cmr=v1.7.5:reviewer=jsquyres:subject=purge stale session dirs at startup

This commit was SVN r30642.

orte/mca/ess/base/ess_base_std_orted.c

@@ -14,7 +14,7 @@
  * Copyright (c) 2011      Cisco Systems, Inc.  All rights reserved.
  * Copyright (c) 2011-2013 Los Alamos National Security, LLC.  All rights
  *                         reserved. 
- * Copyright (c) 2013      Intel, Inc.  All rights reserved.
+ * Copyright (c) 2013-2014 Intel, Inc.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -114,6 +114,11 @@ int orte_ess_base_orted_setup(char **hosts)
 
     plm_in_use = false;
 
+    /* clear the session directory just in case there are
+     * stale directories laying around
+     */
+    orte_session_dir_cleanup(ORTE_JOBID_WILDCARD);
+
     /* setup callback for SIGPIPE */
     setup_sighandler(SIGPIPE, &epipe_handler, epipe_signal_callback);
     /* Set signal handlers to catch kill signals so we can properly clean up

orte/mca/ess/hnp/ess_hnp_module.c

@@ -303,6 +303,11 @@ static int rte_init(void)
     }
     /* Setup the communication infrastructure */
     
+    /* clear the session directory just in case there are
+     * stale directories laying around
+     */
+    orte_session_dir_cleanup(ORTE_JOBID_WILDCARD);
+
     /*
      * OOB Layer
      */

orte/mca/ess/singleton/ess_singleton_module.c

@@ -11,7 +11,7 @@
  *                         All rights reserved.
  * Copyright (c) 2010      Oracle and/or its affiliates.  All rights reserved. 
  * Copyright (c) 2011      Cisco Systems, Inc.  All rights reserved.
- * Copyright (c) 2013      Intel, Inc.  All rights reserved.
+ * Copyright (c) 2013-2014 Intel, Inc.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -47,6 +47,7 @@
 #include "orte/util/name_fns.h"
 #include "orte/runtime/orte_globals.h"
 #include "orte/util/nidmap.h"
+#include "orte/util/session_dir.h"
 
 #include "orte/mca/ess/ess.h"
 #include "orte/mca/ess/base/base.h"
@@ -166,6 +167,11 @@ static int rte_init(void)
     /* flag that we are not routing since we have no HNP */
     orte_routing_is_enabled = false;
 
+    /* clear the session directory just in case there are
+     * stale directories laying around
+     */
+    orte_session_dir_cleanup(ORTE_JOBID_WILDCARD);
+
     /* use the std app init to complete the procedure */
     if (ORTE_SUCCESS != (rc = orte_ess_base_app_setup(true))) {
         ORTE_ERROR_LOG(rc);